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A case of ectopic parathyroid gland hyperplasia in the pyriform sinus. 2002

Akira Fukumoto, and Manabu Nonaka, and Tomonobu Kamio, and Eriko Kamura, and Chika Ozu, and Shunkichi Baba, and Yoshiharu Ohaki
Department of Otolaryngology, Chiba Hokusoh Hospital, Nippon Medical School, 1715 Kamakari, Inba-mura, Inba-gun, Chiba 270-1694, Tokyo, Japan.

Variability in the location of parathyroid glands is well recognized. There are usually 4 parathyroid glands located in the area of the thyroid gland, but embryologically, they may be found anywhere from the angle of the jaw to the pericardium. We report a case of an ectopic parathyroid gland in the pyriform sinus. It appeared as a tumorous lesion in the pyriform sinus owing to progress of secondary hyperparathyroidism.

UI MeSH Term Description Entries
D006961 Hyperparathyroidism A condition of abnormally elevated output of PARATHYROID HORMONE (or PTH) triggering responses that increase blood CALCIUM. It is characterized by HYPERCALCEMIA and BONE RESORPTION, eventually leading to bone diseases. PRIMARY HYPERPARATHYROIDISM is caused by parathyroid HYPERPLASIA or PARATHYROID NEOPLASMS. SECONDARY HYPERPARATHYROIDISM is increased PTH secretion in response to HYPOCALCEMIA, usually caused by chronic KIDNEY DISEASES.
D006965 Hyperplasia An increase in the number of cells in a tissue or organ without tumor formation. It differs from HYPERTROPHY, which is an increase in bulk without an increase in the number of cells. Hyperplasias
D007828 Laryngoscopy Examination, therapy or surgery of the interior of the larynx performed with a specially designed endoscope. Laryngoscopic Surgical Procedures,Surgical Procedures, Laryngoscopic,Laryngoscopic Surgery,Surgery, Laryngoscopic,Laryngoscopic Surgeries,Laryngoscopic Surgical Procedure,Laryngoscopies,Procedure, Laryngoscopic Surgical,Procedures, Laryngoscopic Surgical,Surgeries, Laryngoscopic,Surgical Procedure, Laryngoscopic
D010280 Parathyroid Glands Two pairs of small oval-shaped glands located in the front and the base of the NECK and adjacent to the two lobes of THYROID GLAND. They secrete PARATHYROID HORMONE that regulates the balance of CALCIUM; PHOSPHORUS; and MAGNESIUM in the body. Gland, Parathyroid,Glands, Parathyroid,Parathyroid Gland
D010608 Pharyngeal Diseases Pathological processes involving the PHARYNX. Diseases of Pharynx,Pharynx Diseases,Disease, Pharyngeal,Disease, Pharynx,Diseases, Pharyngeal,Diseases, Pharynx,Pharyngeal Disease,Pharynx Disease
D002828 Choristoma A mass of histologically normal tissue present in an abnormal location. Aberrant Tissue,Ectopic Tissue,Heterotopic Tissue,Aberrant Tissues,Choristomas,Ectopic Tissues,Heterotopic Tissues,Tissue, Aberrant,Tissue, Ectopic,Tissue, Heterotopic,Tissues, Aberrant,Tissues, Ectopic,Tissues, Heterotopic
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D016105 Parathyroidectomy Excision of one or more of the parathyroid glands. Parathyroidectomies

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